Pre-Analysis & Start-Up

Pre-Analysis

In the Pre-Analysis step, we will review the following:

• Mathematical model: The fundamental governing equation and boundary conditions as well as additional relations will be discussed.
• FEM approach: We will discuss solution strategy used in solving a nonlinear problem in FEM.

Mathematical Model

As in any static analysis, the fundamental governing equation that we must keep in mind is the stress equilibrium equation (i.e. governing equation).

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Second relationship is called Hooke's law.  For our model, we assume isotropic material under plane stress, and so further simplifying the Hooke's law results in the following equations.

FEM Approach

Start-Up

Go to Step 2: Geometry

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